Titanium® UDL30 is a mechanically attached, highly engineered, coated woven synthetic roofing underlayment designed for sloped roofs. UDL30's advanced polymers combine to deliver a unique gray synthetic roofing underlayment that can be used under all types of primary roofing materials to replace #30 felt. It represents the future in felt replacement technology, and used in conjunction with Titanium PSU30 self-adhered underlayment, offers the sloped roofing industry a truly revolutionary system of safety, security and simplicity. Unlike smooth surfaced underlayments, UDL30 possesses a revolutionary patented slip resistant Sure-Foot® nodular walking surface technology that allows for easier steep slope walkability, even in wet conditions. UDL30 is 100% synthetic, therefore totally unaffected by water, which means it is 100% inert to mold, lays flat and will not wrinkle. Stay on track, take on more jobs and sleep assured that your UDL30 projects will remain intact and dried-in. Gain an edge in productivity and profits; UDL30's light weight, allows for fewer laps, cuts and easier roll handling compared to felt. Unlike felts, UDL30 does not dry out, leach oils in the heat, nor does it become stiff, difficult to roll or crack in the cold. Less material damage and waste during installation and fewer post-install repairs result in significant savings in time and money. UDL30 will continue to protect your high cost, long life rated, primary roofing long after oil saturated felt products have turned to dust.